1	OYL	1-ethyl-L-histidine	1.000
2	HIC	4-methyl-histidine	0.923
3	A1IQX	Ne2-acetamide-histidine	0.867
4	DHI	D-histidine	0.846
5	HHI	(2z)-3-(1h-imidazol-5-yl)-2-iminopropanoic acid	0.846
6	HIS	Histidine	0.846
7	2HF	2-fluoro-L-histidine	0.786
8	A1AS0	5-selanyl-L-histidine	0.786
9	A1ASZ	5-sulfanyl-L-histidine	0.786
10	A1AZ2	3-methyl-D-histidine	0.786
11	A1I9G	3(S)-methyl-histidine	0.786
12	B3U	2-amino-L-histidine	0.786
13	EI4	Enduracididine	0.786
14	HSK	3-hydroxy-L-histidine	0.786
15	MHS	N1-methylated histidine	0.786
16	OHI	3-(2-oxo-2h-imidazol-4-yl)-L-alanine	0.786
17	V5N	(2s,3s)-2-azanyl-3-(1h-imidazol-5-yl)-3-oxidanyl-propanoic acid	0.786
18	HSO	L-histidinol	0.769
19	HSV	L-histidinal	0.769
20	MWQ	3-(1~{H}-imidazol-5-yl)propanoic acid	0.769
21	URO	(2e)-3-(1h-imidazol-4-yl)acrylic acid	0.769
22	HIQ	1-[1,2-dihydroxy-1-(hydroxymethyl)ethyl]-L-histidine	0.765
23	A1A2K	3-[1-(carboxymethyl)-1h-1,2,3-triazol-4-yl]-D-alanine	0.750
24	HOO	(2~{S})-2-azanyl-3-[2,5-bis(oxidanylidene)imidazol-4-yl]propanoic acid	0.733
25	OGC	Gamma-N-methyl-beta-oh-histidine	0.733
26	PRR	3-(methyl-pyridinium)alanine	0.733
27	83O	(2s)-2-azanyl-3-(4h-1,2,4-triazol-3-yl)propanoic acid	0.714
28	DYT	(2~{S})-2-chloranyl-3-(1~{H}-imidazol-5-yl)propanoic acid	0.714
29	ECD	(4r)-4-(2-carboxyethyl)imidazolidin-2-iminium	0.714
30	HIA	L-histidine amide	0.714
31	HIX	3-(1h-1,2,3-triazol-5-yl)-L-alanine	0.714
32	KCJ	3-(1,3-thiazol-4-yl)-L-alanine	0.714
33	O66	3-[(4~{R})-5-oxidanylidene-1,4-dihydroimidazol-4-yl]propanoic acid	0.714
34	Q75	Thiazole-histidine	0.714